Finding the Third Proportional to 12,849,696 and 20,663,856

Step by Step Solution

1. Step 1: Write the proportion equation
   12,849,696 : 20,663,856 = 20,663,856 : x
2. Step 2: Convert to fraction form
   12,849,696/20,663,856 = 20,663,856/x
3. Step 3: Cross multiply
   12,849,696x = 20,663,856 × 20,663,856
4. Step 4: Simplify right side
   12,849,696x = 426,994,944,788,736
5. Step 5: Solve for x
   x = 426,994,944,788,736/12,849,696
6. Step 6: Final answer
   x = 33,229,964.72